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The 1840408-6 is a high-performance, integrated filtered magnetics RJ45 connector from Bel Fuse Inc.'s MagJack® series. This device combines the physical connector, signal isolation transformer, and common-mode choke required for Gigabit Ethernet interfaces into a single compact package, featuring Auto-MDIX support. Its right-angle through-hole design is optimized to save PCB space, providing a complete, reliable, and compliant Ethernet connectivity solution for networking equipment, industrial communications, and embedded systems.
Category:Connectors, Interconnects;Modular/Ethernet Connectors;Modular/Ethernet Connector (RJ45) Jacks With Magnetics
Manufacturer:Bel Fuse Inc.
Series:MagJack®
Packaging:Tray
Part Status:Active
Connector Type:RJ45
Applications:10/100/1000 Base-T, AutoMDIX
Mounting Type:Through Hole
Orientation:90° Angle (Right)
Termination:Solder
Height Above Board:0.555" (14.10mm)
Features:Board Guide, Decoupling Capacitance
Tab Direction:Down
Contact Material:Phosphor Bronze
Contact Finish:Gold
Operating Temperature:-40°C ~ 85°C
Contact Finish Thickness:50.0µin (1.27µm)
Shield Material:Brass
Housing Material:Polyethylene Terephthalate (PET), Polyester
Base Product Number:1840408
Integrated Magnetics: Built-in signal transformers and common-mode chokes provide electrical isolation, noise suppression, and impedance matching, meeting IEEE 802.3 standards and simplifying peripheral circuit design.
Full-Speed Compatibility: Fully supports 10Mbps, 100Mbps, and 1000Mbps (Gigabit) Ethernet data rates.
Automatic Crossover (Auto-MDIX): Built-in Auto-MDIX function automatically detects and adapts to straight-through or crossover cables, enhancing connection convenience.
Space-Saving Design: The 90-degree right-angle through-hole mounting allows the cable port to be parallel to the PCB, significantly reducing the front-panel depth required for the interface.
High-Reliability Contacts: Gold-plated phosphor bronze contacts ensure excellent conductivity, corrosion resistance, and durability over numerous mating cycles.
Enhanced Mechanical and Electrical Design: Features PCB board guides for precise installation; integrated decoupling capacitors for improved power stability and EMI performance; and a metal shield for effective electromagnetic shielding.
Industrial-Grade Robustness: Wide operating temperature range and sturdy PET housing make it suitable for industrial and commercial environments.
Networking Equipment: WAN/LAN ports for routers, switches, firewalls, and network-attached storage devices.
Industrial Control and Automation: Industrial Ethernet switches, PLCs, HMIs, and industrial computers.
Embedded Systems and IoT Gateways: Network interfaces for data acquisition terminals, smart gateways, and protocol converters.
Consumer Electronics: Smart TVs, gaming consoles, and network media players.
Security and Surveillance Systems: Network video recorders, IP cameras, and access control units.
Office Equipment: Network printers and multifunction devices.
The 1840408-6 MagJack® connector is a highly integrated Gigabit Ethernet interface solution. By combining physical connectivity, signal conditioning, and EMC design into one unit, it significantly simplifies the PCB design task for engineers, reduces BOM cost, and delivers high-performance, high-density, and industry-standard Ethernet access for a wide range of networked devices, thanks to its compact right-angle form factor and industrial-grade reliability.
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